Current USA Single Ramp Timer for Aquarium NATURAL LIGHT SCHEDULE- Inspired by mother nature, the Ramp Timer is a fully programmable 24-hour LED lighting controller that not only turns your lights on and off, but it also simulates a gentle sunrise and sunset for your critters. SIMPLE CONTROLLER- A push button keypad provides an effortless way to pre-program on/off times and the large LCD display is easy on the eyes. Simply program your desired on and off times and choose between two modes: on/off or on/off with a 15 minute ramp up and dim down. A manual button even allows you to turn your lights on or off instantly. PROGRAMMABLE- At the pre-programmed on time, the Ramp Timer slowly begins to mimic a morning sunrise and gently increases the lighting level to full brightness over a period of 15 minutes. When the programmed off time is reached, it gradually dims the light over 15 minutes before turning off, simulating a soft dusk to night effect. BENEFITS- Slowly acclimates animals to the high brightness that LEDs produce. This slow acclimation helps reduce stress often caused by sudden light intensity changes and provides a more natural rhythmic daily light cycle. 30 DAY GUARANTEE-We are so sure youll be happy with your purchase that we offer a 30-Day Money-Back Guarantee to ensure customer satisfaction of our Current USA products. If for any reason you wish to discontinue using the products, we will promptly issue a refund.